head.S (1085B)
1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 1994, 1995 Waldorf Electronics 7 * Written by Ralf Baechle and Andreas Busse 8 * Copyright (C) 1995 - 1999 Ralf Baechle 9 * Copyright (C) 1996 Paul M. Antoine 10 * Modified for DECStation and hence R3000 support by Paul M. Antoine 11 * Further modifications by David S. Miller and Harald Koerfgen 12 * Copyright (C) 1999 Silicon Graphics, Inc. 13 */ 14 15#include <asm/asm.h> 16#include <asm/regdef.h> 17 18 LEAF(start) 19 /* Save boot rom start args */ 20 move s0, a0 21 move s1, a1 22 move s2, a2 23 move s3, a3 24 25 /* Clear BSS */ 26 PTR_LA a0, _edata 27 PTR_LA a2, _end 281: sw zero, 0(a0) 29 addiu a0, a0, 4 30 bne a2, a0, 1b 31 32 PTR_LA a0, (.heap) /* heap address */ 33 PTR_LA sp, (.stack + 8192) /* stack address */ 34 35 PTR_LA t9, decompress_kernel 36 jalr t9 37 382: 39 move a0, s0 40 move a1, s1 41 move a2, s2 42 move a3, s3 43 PTR_LI t9, KERNEL_ENTRY 44 jalr t9 45 463: 47 b 3b 48 49 END(start) 50 51 .comm .heap,BOOT_HEAP_SIZE,4 52 .comm .stack,4096*2,4